This study proposes two spiral-based (spiral-out and spiral-in/out) bSSFP pulse sequences combined with two reconstruction methods for accelerated real-time cardiac imaging. Based on a comparison to fully-sampled data reconstructed using gridding, a low rank plus sparse (L&S) method performs better than a CG-SPIRiT method on both spiral trajectories. The spiral-in/out sequence achieved higher SNR and fewer artifacts than the spiral-out sequence. Thus, a spiral-in/out bSSFP sequence with L&S reconstruction is a promising method for real-time cardiac MRI with high image quality and excellent temporal resolution.
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